General Tips on Playing With Both Hands
1. Learn the piece, example, etc hands separate first, then put hands together.
2. Play SLOWLY
3. When first learning to play hands together, avoid examples with complicated rhythms.

1. Scales
Scales are a good way for beginners to develop dexterity and coordination when playing keyboard with both hands. This is because playing scales involves playing notes in synch with one another. Usually scales are played with the same rhythm in both hands, so no worries trying to play different rhythms and concentrating on notes at the same time.
Where should you start? Start with the C Major scale and learn it hands separate. Then try playing the scale ascending very slowly with both hands. Once you are able to play the scale ascending, learn the scale descending. Then play the scale ascending and descending. Learn 1 scale a week until you can play all the major scales slowly. Then gradually increase the tempo over weeks to achieve greater speed.
Here is a scale exercise. Start with C Major and play up the scale with half notes in the right hand while playing whole notes in the left hand. Then do the same but with half notes in the left hand and whole notes in the right had.
2. Hanon
Are great for developing two handed dexterity between both hands. These are for playing in parallel meaning you are playing the same intervals at the same time. Try learning one a day or one a week until you learn them all. Play them slow at first then over weeks gradually increase the tempo.
http://www.hanon-online.com/
3. Czerny
These are highly recommended for practice playing different rhythms and pitches for each hand.
http://pianoexercises.org/exercises/czerny/